Evo Bio 4

Variables used

CooperatorQuantity Starting quantity of cooperator type
DefectorQuantity Starting quantity of defector type
SdQuality Standard deviation of distribution from which an individual’s quality is generated
Y Fraction of fitness lost that is used by individuals in the population
Relatedness The assortment (“relatedness”) in the population
PercentileCutoff Quality percentile cutoff for reproduction
Z Used in computing confidence intervals
MaxTimeSteps Maximum number of time steps to simulate in a run
Runs Number of runs to simulate
IncludeConfidenceIntervals Should confidence intervals be computed? true/false

In each time step, several tasks are performed based on one of several strategies. Here's a list of all the tasks and their corresponding strategies:

Survival- Select one individual from the population to perish
- EquiProbable - All individuals save the same probability of surviving
- QualityProportional - All but one individuals are chosen to survive with their probability being proportional to their quality
- FitnessProportional - All but one individuals are chosen to survive with their probability being proportional to their fitness
- QualityInverselyProportional - One individual is chosen to perish with the probability being Inversely proportional to its quality
- FitnessInverselyProportional - One individual is chosen to perish with the probability being Inversely proportional to its fitness
Fitness - Defines how the Fitness value of an individual is computed
- Default - The default fitness formula as written in the manuscript
- NonReproducingHave0Fitness - Non reproducing cooperators are allotted 0 fitness
Reproduction - Select one individual from the population to reproduce
- FitnessProportional - The probability of an individual being chosen to reproduce is directly proportional to its fitness
PostProcess - Some tasks to be more performed at the end of each time step
- DoNothing - Nothing is done
- Shuffle - The list of individuals is shuffled